Luke 1:48

But why was she lowly and cast down, who carried in her womb the Son of God? Consider that lowliness, which in the Scriptures is particularly praised as one of the virtues, is called by the philosophers "modestia." And we also may paraphrase it, that state of mind in which a man instead of being puffed up, casts himself down.

For if as the Prophet says, Blessed are they who have seed in Sion, and kinsfolk in Jerusalem, (Isa. 31:9. apud LXX.) how great should be the celebration of the divine and ever holy Virgin Mary, who was made according to the flesh, the Mother of the Word?

(Pseudo-Aug. Serm. de Assumpt 208.) O true lowliness, which hath borne God to men, hath given life to mortals, made new heavens and a pure earth, opened the gates of Paradise, and set free the souls of men. The lowliness of Mary was made the heavenly ladder, by which God descended upon earth. For what does regarded mean but "approved?" For many seem in my sight to be lowly, but their lowliness is not regarded by the Lord. For if they were truly lowly, their spirit would rejoice not in the world, but in God.

But she, whose humility is regarded, is rightly called blessed by all; as it follows, For, behold, from henceforth all shall call me blessed. For it was fitting, that as by the pride of our first parent death came into the world, so by the lowliness of Mary should be opened the entrance into life.

And therefore she says, all generations, not only Elisabeth, but also every nation that believed.